To better characterize and increase the size of the 2019 Regulus Interim Mineral Resource Estimate at AntaKori, culminating in an updated NI 43-101 Resource estimate
Approximately 25,000 m
The Phase II drill program commenced in late 2018, immediately following completion of Phase I.
See related Phase II drilling results news releases below:
Regulus Extends Mineralization 500 m to the Northwest at the AntaKori Copper-Gold Project, Peru April 2, 2019
Regulus Reports 610.20 m with 0.84 % Cu, 1.02 g/t Au and 10.28 g/t Ag (1.66 % CuEq) from Surface; Best Intercept to Date at AntaKori Project July 25, 2019
Regulus Reports 819.90 m of 0.53% Cu, 0.24 g/t Au and 7.83 g/t Ag (0.77% CuEq) in Hole AK-19-034; Extending Mineralization Northwards at the AntaKori Copper-Gold Project September 5, 2019
Regulus Reports 504.15 m of 0.36% Cu, 0.19 g/t Au, 2.91 g/t Ag (0.53% CuEq) in Clean, Low-Arsenic Mineralization at the AntaKori Copper-Gold Project, November 19, 2019
Regulus Reports Additional Drill Results at the AntaKori Copper-Gold Project Including: 341.00 m of 0.57% Cu, 0.28 g/t Au and 9.29 g/t Ag (0.85% CuEq) 168.15 m of 0.38% Cu, 0.65 g/t Au and 32.69 g/t Ag (1.15% CuEq) January 16th, 2020
Regulus Extends Mineralized Footprint at the AntaKori Copper-Gold Project January 7th, 2021
Regulus Extends Mineralization at the AntaKori Copper-Gold Project April 6, 2022
Regulus Expands Skarn Mineralization at the AntaKori Copper-Gold Project May 26, 2022
Regulus Reports 171.95 m of 0.67 % CuEq (1.30% CuEqZ including Zn) from New Area Aug 4, 2022
Regulus Intercepts 98.15m of 0.63% CuEq and 287.80 of 0.46% CuEq at the AntaKori Copper-Gold Project , Sept 14, 2022
To better characterize and increase the size of the existing resource at AntaKori, culminating in an updated NI 43-101 resource estimate in first quarter 2019
April 2017 - October 2018
27 holes drilled by Regulus, 2 re-drilled holes, and 4 holes partially drilled by Coimolache onto Regulus ground
Total Meters Drilled
Total Holes Drilled
33 diamond drill holes averaging 700-800m in depth
The Phase I program commenced on the southernmost margin of the Regulus concessions and then moved to the north onto Regulus mineral concessions (Figure 1).
The program consisted of 27 diamond drill holes (AK-17-001 to AK-18-027), including two holes that were lost and re-drilled, for a total of 20,332.35 m. The hole lengths varied from 433.75 m to 1,421.40 m, with an average length of 801.76 m (excluding the two lost holes; 3A and 12A).
News releases related to AntaKori Phase 1 Drill Program with drill result tables:
Regulus Intersects 184m with 1.54 % Copper, 1.05 g/t Gold and 11.9 g/t Silver in First Drill Hole at Antakori Project, Peru August 15, 2017
Regulus Intersects 523.9 metres with 0.65% Cu, 0.47 g/t Au and 7.9 g/t Ag at Antakori Project, Peru September 25, 2017
Regulus Steps Out 400 Metres and Intersects 323.4 Metres with 0.52%Cu, 0.15 g/t Au and 8.28 g/t Ag at Antakori, Peru November 30, 2017
Regulus Steps to North and Intercepts 258 metres with 0.43% Cu, 0.29 g/t Au and 4.62 g/t Ag (0.68% CuEQ) at Antakori, Peru April 13, 2018
Regulus Intersects 327.35 metres with 0.91% Cu, 0.44 g/t Au and 9.84 g/t Ag (1.31% CuEq) at Antakori Project, Peru July 11, 2018
Regulus Reports Best Drill Results to Date from the Antakori Copper-Gold-Silver Project, Peru August 8, 2018
Regulus Reports Additional High-Grade Results from the AntaKori Copper-Gold-Silver Project, Peru November 15, 2018
Regulus Extends High Grade Copper-Gold Mineralization to the North at AntaKori Project, Peru January 30, 2019
A table summarising all drilling known to have been carried out at the Antakori (formerly Sinchao) Project is shown in Table 3. A plan map showing all hole collar locations is given in Figure 1.
No. of Holes
Total Length (m)
Used for the 2012 Resource
Used for the 2019 Resource
Northern Peru Mining & Smelting Corp. (1)
Cerro de Pasco Corporation (2)
Kennecott Corporation (3)
El Misti Gold Ltd
El Misti Gold Ltd
El Misti Gold Ltd
Sinchao Metals Corp.
Regulus Resources Inc. (Phase 1)
Cia Minera Coimolache SA (4)
Table 3. Summary of all drilling carried out at the Antakori Project.
Abbreviations: DDH = diamond drill hole. RCH = reverse circulation drill hole.
Notes: (1) number of holes (“a number of holes”), meterage and location not known; (3) meterage and location not known; (1, 3) no assays; (2) Cu assays only; (1-3) no drill core; (1-3) not in database; (4) Parts of CMC holes that cut Regulus concessions.
Historical diamond drilling was carried out pre-1997 by Northern Peru Mining & Smelting Corporation (1923), Cerro de Pasco Corporation (1964), and Kennecott Corporation (1970). No accurate drill hole locations, azimuths or plunges for these holes have been located. In addition, no assays with certificates, drill core or other information from these holes has been found and hence they are not included in the Regulus database, nor were they used in either the 2012 Southern Legacy Minerals resource or the pending 2019 Regulus Resources resource calculations.
A summary of drill hole collar information for more recent historical diamond drilling programs carried out at Antakori (Sinchao) by El Misti Gold in 1997-98 and Sinchao Metals Corp. in 2007-08 is given in Table 4 (click here to view). Similar collar information for the historical reverse circulation drilling programs carried out by El Misti Gold in 1997-98 are listed in Table 5 (click here to view).
The 1997-98 drill program was carried out by reverse circulation drilling and conventional wireline diamond drilling. The 2007-08 drill program was carried out by conventional wireline diamond drilling. The drill core diameters used for the 1998 diamond drill programme were HQ (core diameter 63.5 mm) and NQ (47.6 mm). The HQ3 (61.1 mm) split‐tube sampling system was used for 6 holes (SDH‐001, 005, 007, 008, 009 and 010). The core diameters used for the 2007-08 diamond drill programme were PQ (core diameter 85.0 mm), HQ (63.5 mm) and NQ (47.6 mm).
To see the full exploration history, visit our AntaKori Exploration History page.